Twin ECU – 12 cyl: Fll and cll displays as shown apply only to 12 cylinder BMWs, all of which have two Engine ECU’s. It is the exact same operating procedure like Fc and cE (see above), except you are reading the 2nd ECU. 1987 ~ 1995 BMW Models: If the tool displays “FF” for the table designator, note the year and model of the BMW (and the VDS number if necessary) and find the car in table A. Note: VDS number is digit 4 thru 7 in the VIN: WBABB23LAE68973
